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2 years ago

12

a local sports team sells 6 tickets for $3,8 tickets for $4,and 10 tickets for $5.write a rule and equation to find out the cost

of 20 tickets.

1 answer:

m_a_m_a [10]2 years ago

5 0

Shsus sksugd fjdud 8272 hydksb shshs. Isnjsjdb

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Which are the solutions of x² = 19x + 12

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Answer:

$\{x=\frac{19-\sqrt{409} }{2}\ , \ x=\frac{19+\sqrt{409} }{2}\}$

Step-by-step explanation:

x² = 19x + 12

⇔ x² - 19x - 12 = 0

Calculating the discriminant :

b² - 4ac = (-19)² - 4×1×(-12) = 409

The discriminant is positive ,then the equation has two solutions.

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Without further study, you forget things as time passes. A model of human memory gives the percentage, p, of acquired knowledge

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42.69% of information is acquired by the student in two weeks.

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We are given the following in the question:

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p tells us about the percentage of acquired knowledge that a person retains after t weeks.

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